Regarding MUTE Sequencer steps.
You can try to exsperiment with the Sequencers Link buttons. The Red buttons. Different settings like the LENGTH and VCA release settings can have an impact on the final result, so perhaps you need to exsperiment. That's a option you have.
Regarding LFO sync.
The LFO has a switch for MIDI (sync). In this settings you can sync the tempo to your DAW in a resolution you select with the LFO Frequncy knob.
The LFO also has a Trigger input to reset the LFO Phase. The trigger you select in the trigger menu reset the Phase.